Table 4.
Histological types of primary malignant brain tumors and incidence in orchard-farm workers and non-pesticide patients from 2005 to 2008
| Histological type | No. of orchard worker patients/year |
No. of nonpesticides patients | ||||
|---|---|---|---|---|---|---|
| Total | Years | |||||
| 4 years | 2005 | 2006 | 2007 | 2008 | ||
| Glioblastoma multiforme (WHO grade IV) | 96 | 16 | 18 | 26 | 36 | 5 |
| Anaplastic astrocytomas (WHO grade III) | 67 | 13 | 15 | 18 | 21 | 4 |
| Astrocytoma (WHO grade II) | 38 | 8 | 7 | 12 | 11 | 15 |
| Anaplastic oligodendroglioma (WHO grade III) | 28 | 6 | 8 | 7 | 7 | 2 |
| Oligodendroglioma (WHO grade II) | 30 | 9 | 8 | 9 | 4 | 11 |
| Anaplastic ependymoma (WHO grade III) | 21 | 4 | 6 | 7 | 4 | — |
| Ependymoma (WHO grade II) | 28 | 7 | 7 | 6 | 8 | 6 |
| Anaplastic oligo-astrocytoma (WHO grade III) | 7 | 3 | 1 | 2 | 1 | — |
| Mixed oligo-astrocytoma (WHO grade II) | 10 | 4 | 2 | 1 | 3 | — |
| Gliosarcoma | 11 | 4 | 4 | 3 | — | — |
| Gliomatosis cerebri | 6 | — | 1 | 2 | 3 | — |
| Choroid plexus papilloma | 19 | 5 | 5 | 4 | 5 | — |
| Ganglioglioma | 5 | — | 1 | 2 | 2 | — |
| Esthesio neuroblastoma | 2 | — | — | 1 | 1 | — |
| Pineocytoma | 3 | — | 1 | 1 | 1 | — |
| Medulloblastoma | 15 | 2 | 4 | 4 | 5 | — |
| Retinoblastoma | 3 | — | — | 1 | 2 | — |
| Total | 389 | 81 | 88 | 106 | 114 | 43 |
Some patients had high grade multicentric gliomas; Mortality in cases: 12% in orchard workers and 7% in non-pesticide tumors; Glioblastoma multiforme and medulloblastomas show increase in the incidence from the year 2005 to 2008